Universal open-backed HCS plunge cutting blades with depth markings. Crank design for flush cutting. For plunge cutting in softwood, timber sheet and plasterboard, and for rough cutting of copper, plastic and polybutylene pipe. Compatible with Silverline, GMC and Triton Oscillating Multi-Tools, and also tool-free, quick-change, and standard multi tool machines. Universal open-backed HCS plunge cutting blades with depth markings. Crank design for flush cutting. For plunge cutting in softwood, timber sheet and plasterboard, and for rough cutting of copper, plastic and polybutylene pipe. Compatible with Silverline, GMC and Triton Oscillating Multi-Tools, and also tool-free, quick-change, and standard multi tool machines.