Available as a weld-on type without holes (LSA) or screw-on type with holes (LSB). Note: Screw holes for LSB Series are not countersunkWARNING: This product can expose you to chromium, nickel, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65WARNINGs.ca.gov.