Also called pig nose or twin hole, this screw head has two round holes that are reverse each other and resemble a pig’s nose. It's really a stability-model screw to avoid tampering. You will want a Particular spanner screwdriver for this type of screw head. This means that the head https://beaursqnl.59bloggers.com/29804583/types-of-screw-heads-names-for-dummies