Jacobs 30453DN 844 Extension Socket Outside 4MT/Inside 4MT
The Jacobs 30453DN (Model 844) is an Archer Series 800 Morse Taper extension socket designed to extend tool length and adapt MT4 (Morse Taper 4) sizes. It features an MT4 outside taper and MT4 inside taper, a 10.43″ (264.92 mm) overall length, and a 5.39″ projection, manufactured from hardened steel.