Amazon.com: Test Ball Plug, Pneumatic, 8 In, Rubber : Clothing, Shoes & Jewelry
1/8 threaded pneumatic shutter plug for pipes and valves metal work 2107001 price adajusa
Test-Tite Multi-Size Pneumatic Test Plug 8" to 12" 83282 | Zoro
1/4 in. Male Stainless Steel Plug, Straight Through Style, Pneumatic Quick Disconnect, 6000 PSI
Pneumatic Plug 1/4" x TC adaptor | GW Kent
Test-Tite 83584 Natural Rubber Pressure-Relief Pneumatic Test Plug with 12-inch Chain, For 4-Inch NPS: Amazon.com: Industrial & Scientific
Quick Connect Air Coupler Plug (ACP)
Amazon.com: HJGarden 10PCS 1/4 Inch Push-to-Connect Fitting Plug, Pneumatic Connector Pipe Plug, Black : Industrial & Scientific
Amazon.com: uxcell Push to Connect Fittings, Cap Style Pneumatic Blanking Plugs, Fit for 6mm Inner Dia. Air Hose Tube Pipe, Plastic, Black, Pack of 20 : Industrial & Scientific