Chevron Bits,all sizes are generally 3 wings and standard design; Any size of 4 wings or chevron type is upon customer’s request; All sizes connection type are AROD,NROD or standard API thread; Any special size and design is upon customer’s request. Chevron Drag Drill Bits: three wings chevron drag bit, four wings chevron drag bit; Drag bits diameter:76mm to 445mm;

No.	Bit Diameter	Bit Design	Type
	inch	mm	Step / Chevron
1	2 1/2〞	64	S/C
2	2 3/4〞	70	S/C
3	2 15/16〞	75	S/C
4	3〞	76	S/C
5	3 1/8〞	79	S/C
6	3 1/4〞	83	S/C
7	3 1/2〞	89	S/C
8	3 5/8〞	92	S/C
9	3 3/4〞	95	S/C
10	3 7/8〞	98	S/C
11	4〞	102	S/C
12	4 1/8〞	105	S/C
13	4 1/4〞	108	S/C
14	4 1/2〞	114	S/C
15	4 5/8〞	117	S/C
16	4 3/4〞	121	S/C
17	4 7/8〞	124	S/C
18	5〞	127	S/C
19	5 1/8〞	130	S/C
20	5 1/4〞	133	S/C
21	5 1/2〞	140	S/C
22	5 5/8〞	143	S/C
23	5 3/4〞	146	S/C
24	5 7/8〞	149	S/C
25	6〞	152	S
26	6 1/8〞	156	S
27	6 1/4〞	159	S
28	6 1/2〞	165	S
29	6 5/8〞	168	S
30	6 3/4〞	171	S
31	6 7/8〞	175	S
32	7〞	178	S
33	7 1/8〞	181	S
34	7 1/4〞	184	S
35	7 1/2〞	191	S
36	7 5/8〞	194	S
37	7 3/4〞	197	S
38	7 7/8〞	200	S
39	8〞	203	S
40	8 1/8〞	206	S
41	8 1/4〞	210	S
42	8 1/2〞	216	S
43	8 5/8〞	219	S
44	8 3/4〞	222	S
45	8 7/8〞	225	S
46	9〞	229	S
47	9 1/8〞	232	S
48	9 1/4〞	235	S
49	9 1/2〞	241	S
50	9 5/8〞	244	S
51	9 3/4〞	248	S
52	9 7/8〞	251	S
53	10〞	254	S
54	12〞	305	S
55	12 1/4〞	311	S
56	15〞	381	S
57	17 1/2〞	445	S