A slide rail 1, further comprising {HEAD ~ a pair} of 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, 
A slide rail 1 , further comprising { HEAD ~ a pair } of 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 HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH 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