Baader 2" ClickLock M68i x 0.75 Clamp (for Hexafoc: Bresser, Explore Scientific / Omegon); Baader 2" ClickLock M68i x 0.75 Clamp - suitable for Bresser, Omegon and Explore Scientific "Hexafoc" focusers with M68 x 0.75 external thread; Consisting of M68a x 1 ClickLock clamp (# 2956268) and M68i x 1 to M68i x 0.75 reversing ring (# 2458236); A 20° rotation by pressing the rotary lever is sufficient to fix all 2" accessories absolutely securely and firmly. Height: 37mm, weight: 180g; ratchet function - indicates the position of the clamp acoustically and haptically. This allows you to recognize whether the clamp is open or closed even in the dark and without looking; compression clamping ring made of thick-walled hard bronze, remains dimensionally stable even after many years of use and holds the most expensive accessories absolutely securely without causing scratches and pressure points