Kelly Bar Spring for Drilling

Kelly bar springPlease check the details about our kelly bar springs as below:product namekelly bar springmaterialsteeldiametercan be customized according to your requirementcolorblack or can be customizedpackageplywoodpayment50% T/T in advance,50%T/T before shippmentdelivery timewithin 3-15 working days after receive your paymentOEMavailableremarkall the specifications of our spring could be customized according to your requirementsWe,Beijing Dazheng Yongye Construction