Protect your fingers from rotary blades! Position your fingers behind the ruler handle to keep them safe from rotary cutter accidents. Makes cutting with rulers fast and easy because it is so easy to lift and reposition the ruler. Magnetic Ruler Handles are removable and can be used with other rulers and templates. Four self-adhesive steel discs included to attach to your rulers. Additional self-adhesive steel discs available so you can use the handles with multiple rulers and templates. Excellent for use with longarm rulers. Sold as a set of two so you can use them together to safely trim corners.