規格 feature	番數 metric	牙數 teeth	線徑 wire	刃徑 cutter	刃長 length of cutter [L]
3.5	6#	BK20T	2.80	2.80	2.5	3.9	4.5	5.0
		CK32T	2.90	2.90	2.5	3.9	4.5	5.0
3.9	7#	BK19T	3.15	3.10	3.5	4.5	5.5	6.0
		CK32T	3.25	3.25	3.5	4.5	5.5	6.0
4.2	8#	BK18T	3.35	3.35	3.5	4.5	5.5	7.0
		CK32T	3.45	3.50	3.5	4.5	5.5	7.0
4.8	10#	BK16T	3.80	3.85	4.2	5.1	6.8	9.0
		CK24T	4.05	4.05	4.2	5.1	6.8	9.0
5.5	12#	BK14T	4.40	4.50	5.2	6.0	8.0	12.5	15.0
		CK24T	4.70	4.85	5.2	6.0	8.0	12.5	15.0
6.3	14#	BK14T	5.10	5.45	6.4	7.2	9.3	12.5	15.0
		CK20T	5.40	5.65	6.4	7.2	9.3	12.5	15.0