品名：JBWTL1/2柄钻头 （俗称：小柄钻头 等柄钻头 缩柄钻头）材质：HSS高速钢(不要拿普通碳钢的来比价)
用途：可以加工薄铁板、铝、铜、塑料、木头等易加工材料。
单 位：支
柄1/2=12.7mm
13mm 
13.5mm 
14mm 
14.5mm 
15mm 
15.5mm 
16mm 
17mm 
17.5mm 
18mm 
18.5mm 
19mm 
19.5mm 
20mm 
21mm 
22mm 
23mm 
24mm 
25mm 
26mm 
27mm 
29mm 
30mm 
32mm 
33mm 
34mm 
35mm 
37mm 
40mm