Description Matching for Eames Aluminium Group made by Vitra EA-101 EA-103 EA-104 EA-105 EA-107 EA-108 EA-115 EA-116 EA-117 EA-118 EA-119 EA-217 EA-219 This screws are used to screw base to seat frame. For European chairs with metric thread. Set 1: If your screws are lost use Set 1. Set 2: If your screws don’t grab any more use Set 2. Sets include: Set 1: 4 thread rolling screws (originally used) Set 2: 4 screws 4 square nuts (repair set for damaged and overtightened threads) Mounting, Set 1 You need a matching Pozidriv screwdriver (Bit PZ 3) and a dip of oil. A normal Philips screwdriver will destroy the screw, because thread rolling screws require some more torque to get screwed in, they cut the thread while screwing in! A dip of oil on thread (protect fabric) will help to get it in. Mounting, Set 2 Place square nut into gap of frame and screw into the nut. It may be required to hold the square nut with a wrench (10mm) while screw in.