This Compact Dolly is perfect for DSLRs, smartphones, mirrorless cameras, and compact video cameras. The solid 3/8” thick metal base is engraved with reference marks to align the flat front and rear axles. The skater type wheels give a smooth ride. Features 1/4-20 female taps and a 1/4-20 male thread. Includes 11 Inch Artticulated Arm and Clip.