The rollers 27 are of conventional design comprised of {HEAD ~ a ball} 63 mounted in {TAIL ~ a base} 65 which includes a mounting flange 67 through which cap screws 61 are journeyed to be secured in the respective channel member 
The rollers 27 are of conventional design comprised of { HEAD ~ a ball } 63 mounted in { TAIL ~ a base } 65 which includes a mounting flange 67 through which cap screws 61 are journeyed to be secured in the respective channel member
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH