Compatible with SmallRig 942 15mm Lightweight Railblock New 15mm-RailBlock-3 RED camera, Red Rig and other 15mm DSLR Camera Hardware and 15mm Cage, comes with 1/4"-20 standard thread. Specifications : Super light new 15mm-RailBlock-3Only 50gnet weight.It comes with optional black and red ratchet wing nut.Material: Aluminum Alloy

Package contents : 1 x 15mm-rail block-32 x 1/4'' screw (short)2 x 1/4'' screw (long)1 x Hex Wrench