X Large Ratcheting Combination Wrench Set with Roll (16 Piece) accessory set Manufacturer Warranty Lifetime Limited Certifications Manufacturer Warranty Lifetime Limited Certifications and Listings No Certifications or Listings stainless steel and metals Double cut style for rapid material removal in tough applications Solid carbide tooling provide long life and faster cutting speeds Round 1 4 in 95 Features No Additional Features Measurement Standard Metric Individual Set Set Number of Pieces 16 Returnable 180 Day Hand Tool Type Wrench Set Tools Product Type Hand Tool Manufacturer Warranty Manufacturer's Limited Lifetime Surface Drive Pulse provides stronger grip on fastener