Hand hole digger for built-in lock of window or door

The utility model relates to a hand hole digger for the built-in lock of a window or a door, comprising a rocker arm 1, a screw rod 2, a screw rod sleeve barrel 3, a drill bit 4, a chucking appliance 5, a screw nut 6, a screw rod 7 and a soft rubber shim 8. A distance L < 2 > between the inner...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	YU HAIAN
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORY MACHINES OR APPARATUS NAILING OR STAPLING MACHINES IN GENERAL PERFORMING OPERATIONS SAFETY DEVICES, e.g. THOSE FOR SAWS TRANSPORTING WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL
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