Features and Benefits: Made of sturdy, durable, high-strength material; Shaped to fit the hand comfortably; Embossed rubber face which allows good adhesion for StikitT Sheet rolls and StikitT Production Sheets; Size: 2-3/4 x 7-3/4" Blocks; This block uses 3mT , it's unique StikitT attachement system.; This block uses 3mT , it's unique StikitT attachement system.