Propalock has been designed to fit adjustable telescopic steel props manufactured to comply with British Standards BS 4074: 1982 and BS EN: 1065:1999.

Propalock has 7mm tolerance to accommodate fitting and minor variations in steel prop diameter that may be the result of normal wear and tear, corrosion or build-up of surface finish such as overpainting.

The diameter of the lower outer tube is 60mm, the circumference is 189mm.

Propalock uses a fine-pitch threaded bolt with a unique coded head.

Propalock’s operating diameter range is 64mm when open and 57mm closed.