Triangle screw on plate ST 3984 - Wagner System GmbH
Xushiwanju Fixed things 100 Pcs M3 Security Screws Triangle Drive with Pin in Head Applicable to many places (Length : 8mm, Size : M3)
Fixinus Full Triangle Head Screwdriver Set for Electronic Toys, 7-Piece Triangle Security Screws Driver Tool Kit for Thomas McDonald's Toy Series Repair Battery Disassemble - Toys Triangle Driver Set : Amazon.co.uk: Toys
Triangle Head Screwdriver Set 4 Piece Triangle Screw Drivers Tool Perfect for Electronic Device Repairing - By Ram-Pro : Amazon.co.uk: DIY & Tools
HOW TO UNSCREW TRIANGLE SECURITY SCREWS & BOLTS | Lil Tips with Gaz EP01