D&D Global 372XL1770 Timing Belt - XL Section, 45mm Wide, 186T, 37.2in Cogged Cogged V-Belt What does the K in

What does the K in Gates 4L500K mean

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The Bando 3PK1140 Automotive Serpentine Belt is a Micro-V (multi-ribbed) belt with Micro-V ribbed PK-section dimensions

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D&D Global 372XL1770 Timing Belt - XL Section, 45mm Wide, 186T, 37.2in Cogged Cogged V-Belt What does the K inThe D&D Global 372XL1770 is a synchronous timing belt with XL pitch profile, manufactured by D&D Global. This belt uses a standard trapezoidal tooth profile for reliable performance in general purpose synchronous drives. Constructed with Neoprene body and fiberglass cord tensile cord for precise positioning and dependable synchronous power transmission. Specifications Pitch Profile XL Pitch 0. 2 in Tooth Profile Trapezoidal Tooth Location Single Side