supply of silent block for aar-h coupler (rev.03) to escorts drg. no. 1c101060069 or articulated spheroelastic rubber bearing sanrok drg. no. 1ed-4454 or spheroelastic bearing frontier drg. no. fasl/sb/0848 or equivalent of high tensile tight lock centre buffer coupler to rdso specification no. rdso / 2011 /cg-03 rev.03silent block for aar-h coupler (rev.03) to escorts drg. no. 1c101060069 or articulated spheroelastic rubber bearing sanrok drg. no. 1ed-4454 or spheroelastic bearing frontier drg. no. fasl/sb/0848 or equivalent of high tensile tight lock centre buffer coupler to rdso specification no. rdso / 2011 /cg-03 rev.03,silent block for aar-h coupler (rev.03) to escorts drg. no. 1c101060069 or articulated spheroel astic rubber bearing sanrok drg. no. 1ed-4454 or spheroelastic bearing frontier drg. no. fasl / sb / 084 8 or equivalent of high tensile tight lock centre buffer coupler to rdso specification no. rdso/2011/cg-03 rev.03 [ warranty period: 30 months after the date of delivery ]