Teknụzụ:

	Ụdị	Kwesịrị ekwesị maka ịkpụ waya (mm2)	Isi akụkụ (mm)					Nọmba Bolt	Ibu (kg)
			B	M	L	R	H
	JBB-1	6.6-7.8	44	12	90	4.5	50	2	0.62
	JBB-2	9.6 ~ 11.0	50	16	90	6.0	60	2	0.82
	JBB-3	13.0 ~ 14.0	56	16	124	7.0	65	3	1.90

ndetu:

1. The mwekota ahu na cover efere bụ malleable ígwè nkedo, niile na-ekpo ọkụ itinye galvanized

2. Ihe mpụtara nke mkpụrụedemede na ọnụọgụgụ dị na tebụl bụ: J– ejikọrọ;B– Parallel Groove;B-akara ọkụ;ọnụọgụgụ na-egosi eriri igwe ọdabara