SK 5 STEEL BLADE Sharp sturdy blade, ideal for cutting chamfer, round molds, trunking and pvc strips, rubber gaskets, molding and weatherstrip.HIGH-PRECISION ENGRAVING SCALE Clear and precise scale surface to help you cut accurately. Adjustable slider on the scale surface allows for a 45-135cutting angle, free to cut the trunking to different shape when needed.ERGONOMICALLY DESIGNED HANDLE Strong and durable integrated handle is made of aluminum alloy and PPC anti-skid cover. Comfortable grip no hand fatigue for long-term use.TURN CLASP SAFETY LOCK The turn clasp closure is easy to close and open, safe and convenient, you no need to worry about being accidentally scratched by the blade.REPLACEABLE BLADE This trunking scissors set includes additional Spare Sharp heavy duty replaceable blade. Notice this shear is not suitable for cutting metal and stainless steel.