A slide rail 1, further comprising a pair of {HEAD ~ fifth rollers}, mounted on {TAIL ~ the fixed rail} closer to the proximal end than the second roller and closer to the distal end than the first roller, 
mounted on
A slide rail 1 , further comprising a pair of { HEAD ~ fifth rollers } , mounted on { TAIL ~ the fixed rail } closer to the proximal end than the second roller and closer to the distal end than the first roller ,
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL 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