Neewer Camera Dolly Kit for DSLRs, Includes Mobile Rolling Sliding Dolly Stabilizer Skater Slider, 7 inches Adjustable Friction Magic Arm, Mini Hot Shoe Ball Head, Easy-Adjust Smartphone Tripod Holder Kit includes: (1)Black Mobile Rolling Sliding Dolly, (1)7 inches Adjustable Friction Magic Arm, (1)Black Hot Shoe Ball Head, (1)Easy-Adjust Smartphone Tripod Holder Black Mobile Rolling Sliding Dolly: Designed to help you create more dynamic shots on flat surfaces like on table, ground, etc, adding cool video to your digital skill set, or just make it easy for you to do your own creative projects using a hand-held HD camcorder, video-ready DSLR, or professional video camera Professional 7 inches Adjustable Friction Magic Arm: Precise Articulating design and durable material; Allows universal mounting options; With a 360 swivel head makes you a comfortable use; Perfect for LED light, LCD monitor or flash light etc. on cameras Mini Hot Shoe Ball Head: Includes a standard 1/4 tripod thread post; Fits onto a standard accessory shoe and locks into position; Ball head can be adjusted into most any position; Use to mount accessories onto a flash bracket Easy-Adjust Smartphone Tripod Holder: Adjustable Spring Lock Holder compatibe with any smartphones up to 3.8" wide (iPhone 5C 5S 5, HTC ONE, Samsung Galaxy S4 S3); Anti-shock soft rubber spring cushioned reinforced holder; Perfect to go with countdown snapshot