Protos Integral Glasses Optical Prescription Eyewear Insert Replacement Blades Large Ring Dimensions:Internal Diameter (ID):

Large Ring Dimensions:Internal Diameter (ID): 45MMExternal Diameter (ED): 70MMProof Tested: 16KNMaterial: ALUMINIUMMinimum Break Strength: 25KNFinish: Anodised Red

the Rope Wrench provides no interference with ascending the rope

Efficient length adjustment thanks to the Double Back buckle

When released it locks the gate shut for security

Weight: 80g

Protos Integral Glasses Optical Prescription Eyewear Insert Replacement Blades Large Ring Dimensions:Internal Diameter (ID):The Optical Insert has been specifically designed as an add on for the PROTOS Integral Safety Glasses. It can be easily clipped to the bridge of the PROTOS Integral Safety Glasses. Your optician can easily mount optical lenses up to + 4 dioptres into the glass insert. The lenses are fully protected, as they are placed behind the protective glasses. A major advantage of the integrated glass insert is that no temples interfere with the ear protector,