Size(diameter)：m6-m24 and customizedColor：Silver/Yellow/Blue-white etc.Material：carbon steel , stainless steel(grade 4.8/8.8/10.9/12.9)Coating：zinc plated, HDGStandards：GB, DIN, ISO, ANSI/ASTM, B7, BS, JIS etcSamples：samples are freePayment Terms：T/T paypal West union and as requestDelivery：within 15-30 days after confirm the orderApplication：concrete and the density of natural stone, solid brick