Simpson #10 x 1-1/2" SD Connector Screw Galvanized SD10112 PACK:500 Pk What is the difference between

What is the difference between the ECCLLQ444SDS and the ECCLRQ model

also sold separately)

making it suitable for structurally demanding applications

Screw Type: Type 305 stainless-steel trim-head

Simpson #10 x 1-1/2" SD Connector Screw Galvanized SD10112 PACK:500 Pk What is the difference betweenModel No. SD10112 Coating Material Mechanically Galvanized, Class 55 Screw Size #10 Length (in.) 1 1 2 Drive Type 1 4 in. Hex Head Type Hex Head Point Type Sharp Point The Strong DriveSD Connector screw is specifically designed to replace nails in certain Simpson Strong Tieconnectors and is the only screw approved for that application. The load rated SD screw has been tested and approved for use in many popular Simpson Strong Tie products. In certain