Product Description The TH2050 is a heavy duty impact block style lowering pulley, of forged aluminium construction, designed to absorb impact during shock loading. Available in a choice of anodised colour finishes and finished round and smooth to avoid rope damage, the TH2050 features swivelling side plates for easy installation mid line, A simple thumb screw operation secures the plates closed, and there is a handy cord for attachment of the rigging block to climbing harness. With heavy duty stainless steel bearings, the large sheave can take rope up to 18mm diameter and has a working load limit of 20kN. Please remember, rigging of loads for dismantling trees is a dangerous operation where many unseen factors affect the behaviour of falling loads. Rigging should only be undertaken by trained personnel.