TWD-4-ACR Apex #4 Tri-Wing ® Bit, 1/4” Hex Insert, ACR. Apex Tri-Wing Screwdriver Bits from Apex Fastener Tools feature a screw drive with the three radial slots. Sometimes referred to as Triangular Slotted, the Apex Tri-Wing Screwdriver Bits is a screw with three ”wings” and a small triangular hole in the center. Apex Tri-Wing Screwdriver Bits won’t cause damage to the tri-wing security screws. Apex Tri-Wing Screwdriver Bits make it possible to access the deep screws located on video game devices including: Nintendo Wii, Nintendo GameCube, Nintendo Advance, and Nintendo Advance SP.