SG shear wrench has been the China Leader in providing bolt installation tools for bridges,buildings,high-rise buildings,power plants.SG shear wrench company dedicated to supply good shear wrench,good service,good after sales to all customers,to meet customer request.SG shear wrench have more than 30 years wrench production experience,exported to more than 20 countries,we believe in integrity and always upholding our promises to customers.SG shear wrench supply the most widely range shear wrench include pre-fasten shear wrench,shear wrench,manual shear wrench for Tension Control Bolt fasten with 110V/115V and 220V/230V,for bolt size from M12 to M36,1/2" to 1-1/2",for all standards TC bolts.