The Chinook Sailing Fixed Harness Lines are a simply and durable option for sailors of all types. 

Quick release plate for all Two-Bolt "Quick Release" Mast Bases. Includes mounting hardware.

Lower plate assembly only for all 2-Bolt Mast Bases

Lowest design, extreme durability.

So that the iBASE 2.0 can be installed or removed without the need for tools, it has been designed to include a central screw. Although these designs are normally built relatively high, Duotones engineers have found a solution for making the iBASE 2.0 the lowest base of its kind. Because there is nothing in the way, the risk of injury to feet and toes is kept to a minimum. In contrast to conventional mastfoot bases made of Zytel plastic, the iBASE 2.0 is the only one produced using a much stiffer material known as POM, thus improving the durability. 

One for all – just one base for all conditions
We are 100% convinced that absolutely no-one in any conditions and for any discipline needs more than one base. The high flexibility and ease of installation and removal makes the need for multiple bases and different systems simply obsolete. This is why Duotone only offer the iBASE 2.0. All these additional features do not lead to any additional weight – something other bases in the market cannot claim to achieve!
Release option
We have always been annoyed having to unscrew the base from the board after the surf session with tired hands, just so the board fits into the board bag. For this problem in particular the iBASE 2.0 features a useful release option for removing the connection joint by simply pulling the sand-resistant, stainless-steel U-pin. Without the need for tools, you can also swap this for a different model in a matter of seconds depending on your preferences. 
An additional advantage of this feature is that with a replacement joint/tendon you are immediately ready for action again when worst comes to worst – without having to go through the effort of repairing the joint/tendon.
Even safer
A) For all safety nuts, the release button can now be fixed with a screw (PERMA LOCK OPTION), thus inhibiting the release function. 
B) Should the iBASE 2.0 ever become stuck to the board after long storage times, two holes now allow you to use a screwdriver as a lever to release the base with ease.

The Chinook Sailing 2-Bolt Quick Release Tendon Mast Base Euro-Pin EX is the most dependable and user friendly base on the market!

• Same shock absorption as standard Tendon bases for less stress on board, & sailor.
• Uses standard Chinook Tendon for easy serviceability.
• Free moving Mechanical hinge provides ease of attachment for larger or wider Foil boards, Formula, & Long boards etc.
• Small boards less likely to flip over during waterstarts in high wind & wave conditions.
• Mechanical hinge eliminates an estimated 75-80% of fatigue which occurs due to constant bending of the Tendon.
• Proven 2 bolt Quick Release Base Plate

The Chinook Sailing Carbon US Cup-RDM-Short 20cm Extension is elegant and very strong. A new easy to use Composite Snap Collar system eliminates lost pins or collars and can be quickly adjusted with one hand. All extensions come with the proven US Power-Haul pulley and cleat system and 2 cm adjustment increments.

• Adds maximum of 20cm to mast length
• Reduced Diameter
• US Basecup
• Large brass pulleys for increased leverage
• Stronger than aluminum

The Chinook Sailing Aluminum US Cup-SDM-Short 12cm Extension uses our new Six Pin collar for easy and solid adjustment. The anodized logo/index markings are one of the many unique and innovative features that make these the most popular extensions on the market. Comes standard with the proven US Power-Haul pulley and cleat system and 2 cm adjustment increments.

• Adds maximum of 12cm to mast length
• Standard Diameter
• US Basecup
• Large brass pulleys for increased leverage

The Chinook Sailing Aluminum Euro Pin EX-RDM-Medium 28cm Extension uses custom alloy and bell shaped tubing to provide the best weight to strength ratio available in aluminum construction. The new, easy to use Composite Snap Collar system eliminates lost pins or collars and can be quickly adjusted with one hand. All come with the proven Euro-Pin EX Power-Haul pulley and cleat system and 2 cm adjustment increments.

• Adds maximum of 28cm to mast length
• Reduced Diameter
• Euro-Pin EX
• Stainless steel button engages three sides of Euro-Pin for safer attachment
• Large brass pulleys for increased leverage

The Chinook Sailing Aluminum US Cup-RDM-Medium 28cm Extension uses custom alloy and bell shaped tubing to provide the best weight to strength ratio available in aluminum construction. The new, easy to use Composite Snap Collar system eliminates lost pins or collars and can be quickly adjusted with one hand. All come with the proven US Power-Haul pulley and cleat system and 2 cm adjustment increments.

• Adds maximum of 28cm to mast length
• Reduced Diameter
• US Basecup
• Large brass pulleys for increased leverage

The Chinook Sailing Aluminum Euro Pin EX-SDM-Tall 48cm Extension uses our new Six Pin collar for easy and solid adjustment. The anodized logo/index markings are one of the many unique and innovative features that make these the most popular extensions on the market. Comes standard with the proven Euro Pin EX Power-Haul pulley and cleat system and 2 cm adjustment increments.

• Adds maximum of 48cm to mast length
• Standard Diameter
• Euro Pin Ex
• Large brass pulleys for increased leverage