UNITED PACIFIC - 23179 : "Trailer" Long Air Valve Knob - Stainless Plaque w/ Cursive Script

UNITED PACIFIC - 23365 : "Trailer" Air Valve Knob - Stainless Plaque W/ Cursive Script

CK-CKK-S: Yellow Kenworth Square Brake Knob

UNITED PACIFIC - 23364 : "Tractor" Air Valve Knob - Stainless Plaque W/ Cursive Script

GR-TCKN/TLKN-W: Solid White Tractor & Trailer Shift Brake Knob with Adapter

CK-KOT-OR: Keep On Truckin' Octagon Red Brake Knob

CK-KOT-SR: Keep On Truckin' Square Red Shaped Brake Knob

GR-TCKN/TLKN-B: Blue Glitter Tractor & Trailer Brake Knob with Adapter (Pair)

Lifetime - 0484-2 : Short Round Tractor Trailer Knob (Pack Of 2)

CK-KOT-OY: Keep On Truckin' Octagon Yellow Shaped Brake Knob

CK-KOT-SY: Keep On Truckin' Square Yellow Shaped Brake Knob

GR-TCKN/TLKN-R-R: Red Rock Tractor & Trailer Shift Brake Knob with Adapter

GR-TCKN/TLKN-PU: Purple Glitter Tractor & Trailer Brake Knob with Adapter

GR-TCKN/TLKN-P-WH: Pearl White Tractor & Trailer Shift Brake Knob with Adapter

GR-TCKN/TLKN-CG: Cactus Green Glitter Tractor & Trailer Brake Knob with Adapter

Lifetime - 0484-K: Chrome Plated Billet Aluminum Tractor/Trailer Knobs (Kenworth Keyhole)