JM Adjustable Lever Screws,M6 Part# TA-M6 TB-M6×16/20/25/32/40 Material: Zn-Alloy Color: Black Description: 1.Pulling the lever upwards, disengages the serrations, allowing it to be swivelled to the ideal clamping position. 2.When releasing the lever, the serrations automatically re-engage. JM Lever Screws,M8 Part# TA-M8 TB-M8×20/25/32/40/50 Material: Zinc Alloy Color: Black Description: 1.Pulling the lever upwards, disengages the serrations, allowing it to be swivelled to the ideal clamping position. 2.When releasing the lever, the serrations automatically re-engage. JM Adjustable Handle M10 Part# TA-M10 TB-M10×20/25/32/40/50 Material: Zinc Alloy Color: Black Description: 1.Pulling the lever upwards, disengages the serrations, allowing it to be swivelled to the ideal clamping position. 2.When releasing the lever, the serrations automatically re-engage. JM Adjustable Levers Screws,M12 Part# TA-M12 TB-M12×25/32/40/50/63 Material: Zinc Alloy Color: Black Description: 1.Pulling the lever upwards, disengages the serrations, allowing it to be swivelled to the ideal clamping position. 2.When releasing the lever, the serrations automatically re-engage.