The SAKRETE 20 lb. Fast Set Patcher is a pre-blended, fast setting mixture that can be used for making quick repairs in concrete walks, slabs, floors, steps and driveways. The Patcher sets in 20 minutes and is ideal for applications of 1/4 in. to 2 in. (6.4 to 51 mm) in thickness. Does not require forms or braces. Color: Gray.