Size	d		dc		h			weight
	min	max	max	min	min	basic	max
10	11	11.7	21	19.7	7	8	9	15.7
12	14	14.7	24	22.7	7	8	9	18.8
14	16	16.7	28	26.7	7	8	9	26.1
16	18	18.7	30	28.7	7	8	9	28.3
18	20	20.7	34	32.7	7	8	9	35.2
20	22	22.84	37	35.4	7	8	9	43.6
22	24	24.84	39	37.4	7	8	9	46.6
24	26	26.84	44	42.4	7	8	9	61.5
27	30	30.84	50	48.4	7	8	9	79
30	33	33.84	56	54.4	7	8	9	101
33	36	36.84	60	58.4	7	8	9	114
36	39	39.84	66	62.4	7	8	9	140