HACKSAW HIGH TENSION 12" NICHOLSON. The Nicholson hacksaw frame has a quick change high tension crank blade that can withstand torque tension up to 30,000 psi and micro adjustment. Its frame has space where spare blades can be stored and can be positioned at cut angles of 90 degrees or 45 degrees. The edge of the frame can serve as a cutting saw. Features a 12" crank blade length, quick-change blades and space to store extra blades.