10A x 1-1/2" Tri-Wing Sheet Metal Screw - Opsit Truss Head - 18-8 Stainless Steel - Pkg of 100: Amazon.com: Industrial & Scientific
Tri-point Y0 Screwdriver
Tri-Wing Pan Head Screw _SRWS from NABEYA BI-TECH | MISUMI
Tri-Wing Battery Retaining Screws For Apple MacBook Pro A1278 Set Pack BAQ UK | eBay
Tri-Wing Screw - How to Open with Torx Screwdriver - YouTube
Nintendo includes in basically all of its products extraordinarily small tri -wing screws, which are both the most difficult possible screw to open without a proper screwdriver and a difficult screwdriver to find