This Filmtools 2 x 4 Dolly Track Cribbing is made from construction grade two by fours. These pieces of wood are used to level and create a smooth track for a camera dolly. When you're attempting a dolly shot, smoothness is key. This Filmtools 2 x 4 Dolly Track Cribbing allows you to create smooth, fluid, and memorable dolly shots that you and your crew can be proud of. The Filmtools 2 x 4 Dolly Track Cribbing can be used in conjunction with our camera wedges to add even more stability to your dolly track.