Studs in steel 8.8 a) Dia 12 mm, total length 260 mm, metric pitch 1,5 long thread: mm 75 short thread: mm 55 a) Dia 20 mm, total length 360 mm, metric pitch 1,5 long thread: mm 90 short thread: mm 50 Please send costs for 100 pcs. And 1000 pcs. /each position We require material certifications as well.