Insulated plastic rail joiners - 12 per package Price: $3.85
26-084 Code 83 insulated
26-071 Code 70 insulated
26-056 Code 55 insulated

Nickel silver rail joiners
26-148 Code 148 slip-on (50 per package) Price: $8.05
26-100 Code 100 slip-on (48 per package) Price: $6.05
26-083 Code 83 slip-on (50 per package) Price: $8.05
26-055 Code 55 slip-on (50 per package) Price $8.05

Shinohara Code 70 NS (12 per package) Price: $8.95

150-55 Atlas Code 100 insulated (24 per package) Price: $2.45