RedWin R1-K to R1 Adapter | Fit Cobra Max Pro onto Standard T1/T2 Mount, Stainless Steel Anti-Recoil Pin, Compact 4mm Thickness Features Idea for Installing Cobra Max Pro on the Existing T1/T2 Mount. R1-k Footprint is Exclusive for Cobra Max Pro. R1 Footprint is same as T1/T2. Stainless Pin idea for Better Recoil-proof. 4mm Thickness. Compact & Durable. With Screws M3x8mm x 8pcs.