HO Scale SE Shelf Whisker® Metal Couplers with Gearboxes - Medium (9/32") Centerset ShankThe 119 coupler will work anywhere a NO.5®, 28, 38, 58, 118, 119, 148 & 158 Coupler will work.The 119 Kadee® Magne-Matic® Coupler features a Metal Coupler, insulated 242 Draft Gear Box and Lid with center screw holes for mounting. Shelfs actually work. The 119 Coupler may be mounted with supplied 242 draft gear box or with Manufacturers cast-on coupler pockets.Package Includes:(2) Pair SE Shelf Metal Whisker® Magne-Matic® Metal Coupler - Medium Centerset Shank(2) Pair 242 Snap-Together Gearboxes(2) 625 Knuckle Springs119 Whisker® Metal Coupler Features:Material - MetalShank Length - Medium (9/32") (center hole to back of coupler head)Coupler Offset - CentersetKnuckle Spring - 625Centering System - Whisker®SE Metal Shelf HeadWorks In Place of - NO.5®, 58, 28, 38 ( 148 in a 252 box), 118, 119, 158, medium centerset "clone" couplersWorks With - 213, 232, 234, 242, 252, 262, manufacturer cast-on draft gearboxes242 Snap-Together Gearbox Features: Material - Insulated PlasticLid Type - Snap-TogetherDimensions - 7/16"L x 5/16"W x 1/8"HWorks With - NO.5®, 58, 20-Series and 40-Series, All Whisker® CouplersMounting Specifications:Mounting Height - 29/64"Centerline - 25/64"Trip Pin Height - 1/32"Center Hole - 2-56 Insulated Screws are the most commonly used. (Screw length will vary)