These are Kadee?« #242 Magne-Matic?« Universal Black Boxes FEATURES: Precision engineered to work with all Kadee?« "WHISKER" Couplers (KADU0148) and NO.5?« (KADU0005), #58 (KADU0058), #118 (KADU0118), 20-Series Couplers, 40-Series Couplers and 150-Series Couplers. Snap-together insulated gear boxes and lids. Made in the USA. INCLUDES: 10 Pair REQUIRES: Assembly Couplers SPECS: Scale: HO 1:87KadeePart KAD242