Baader 2" ClickLock 2956233 SCL-clamp to 3.3"i – for Celestron 9¼ - C14Baader 2" ClickLock SCL (3. 3") clamp for 9" HD, 11" SC HD and 14" SC HD and other large SC and Edge HD telescopes A small rotation by 20 with gentle fingertip pressure to the knurled lever is enough to securely clamp every 2" accessory. Ratchet function features acoustic and haptic display of the clamp position. This way you can hear and feel in darkness without looking if the clamp is opened or closed. Compression tension ring of thick walled hard