Callaway ERC Soft Truvis Yellow Golf Balls Shopify Collective Advanced Toe Weighting Advanced Advanced Toe Weighting Advanced toe weighting technology in the TE 400 Iron maximizes stability on impact and provides better off center hit distance from the face of the iron That’s why the Qi irons are designed to be the straightest game improvement irons in golf High Speed Mantle for Enhanced Ball Speed and Control Creates more efficient energy transfer between the layers for more ball speed and provides more wedge spin around the green GRIP Urethane Coating for increased Greenside Spin This coating system features high elongation paint for increased control on approach shots and short game shots