Clearing out stock and all I have left are 18 mm. No new stock on order Top quality Caoutchouc rubber Straps are cut to fit I have the following available Blue double sided - $18.00 - Seven Left Red and Yellow double sided are discounted to $14.00 due to some black color mixing spots Red - Seven Left Yellow - Two Left Shipping is $3.50 - $6.50 for one strap. If interested. Please email me at [email protected] Thanks DON