Impression Coping (2-Piece, Transfer Type) (For Closed-Tray Technique)- Guide Pins : AANGPT/AANGPT12H/AANGPT16/ AANGPT16H)• Streamlined shape ; easy to transfer.• Anti-rotation grooves match with hex structure of fixtures.• Should be tightened with Impression Driver• Impression Coping Driver and Hand Driver(1.2Hex) should be used to ensure Impression Coping is properly tightened.