Luminously Camera Skate Dolly DSLR Rail Car Slider - Smooth Table Top Skater For Cameras (Black)<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Slim design， perfect for indoor， outdoor， travel and compact enough to take anywhere with you! </span></li><li><span class="a-list-item"> Knobs at the top allow for turning wheels so that it can go straight or in circles. Adjust to how you’d like to use it. Simple and easy to lock into place. </span></li><li><span class="a-list-item"> 6 mm plate for skate dolly with scale marks. New Upgraded bearings， different from other skate dollys offered that have cheap wheels and bearing construction. </span></li><li><span class="a-list-item"> 1/4 Screw for DSLR Camera Included. Gives ability to place 2 more cam accessories (Requires purchase of 2 more 1/4 screws) like Magic Arm， Flash or for placing camera into other positions. </span></li><li><span class="a-list-item"> The Ball Head in Picture is NOT Included. Please contact us with any questions， satisfaction ensured! </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/419pi1c02gL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31uDWc%2BpXDL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41Olrba7%2BEL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41QZ549ZLyL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41uu-p19DKL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41rgoI-bQwL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41c69kWDR%2BL.jpg" noproxy>