-The depth of the two sides arms are 0
just stick the included metal plate on the back of your device or its case
parent-child interaction and so on
Premium material Covered with extra sturdy nylon jacket
uxcell 4pcs Double Split Clamp-On Shaft Collar for 1-1/2" Shaft, Two-Piece Clamping Collar, 2-3/8" OD, 9/16" Thickness, Aluminum Alloy Set Screw Split Collar Clamp auspowers_batchfour -The depth of the twouxcell 4pcs Double Split Clamp On Shaft Collar for 1 1 2" Shaft, Two Piece Clamping Collar, 2 3 8" OD, 9 16" Thickness, Aluminum Alloy Set Screw Split Collar Clamp Durable Construction: Made of quality aluminum alloy material, lightweight, surface anti rust and corrosion resistant, strong and durable, long service life. Secure and Accurate Positioning: These collars provide a secure grip on the shaft, preventing slippage or movement of components.