The disc may be rectangular with wings added on, to square off the rounded 80 mm disc.

It could play 120 mm discs if a guard was moved to allow the disc to protrude from the unit.

The rear brake is a single 220 mm disc with a Brembo twin-piston caliper.

Rear brakes is a single 230 mm disc.

It has twin 300 mm discs at the front with optional ABS.

It has a single 300 mm disc at the front with optional ABS.

Rear brakes feature a 230 mm disc with a twin-piston opposed caliper.

The company's 100 mm disc (just under 4 inches) is destined for use with new personal computers.

The additional 14-minute playing time subsequently required changing to a 120 mm disc.

All three formats existed also in small 80 mm discs.