10279810 - $6.28 - brake lever screws kit, 12mm round hand master cylinder [10279810] : MG Cycle, Moto Guzzi Parts and Accessories available online at MGCycle.com
Amazon.com: Millcraft ProductsMillcraft Parts Universal Motorcycle Master Cylinder Front Brake Reservoir Cover Cap Screws Replacement M4x0.7x12mm Black Pair : Automotive
MASTER CYLINDER, Dual Bowl, 1 1/8 Inch Bore, OE-style w/ dual bail, zinc finish cap and bleeder screws, features casting numbers, GM Licensed repro - #C-4650-4BG - National Parts Depot
Amazon.com: Universal Motorcycle Screws Master Cylinder Front Brake Reservoir Cover Cap Screws Replacement M4x0.7x12mm Black Pair for Suzuki LT-F250 E17 E2 E24 E28 LT-F400 E24 P17 LT-F500F R450 Z250 LT230E LT250R :
Pair of Honda M6 Rear Rear Master Cylinder and Front Disc Bolt Kit Set. 90114-MAC-780 and 90106-KAF-000