Use water-based lube. Slide the ring to the base. A fingertip should fit under with mild resistance.
Dragon has two openings: store listing is 1.25 in on the shaft ring and 1.75 in on the back ring. Follow the store photos for orientation.

Mammoth Force
Red Tiger
Three silicone rings. The store does not publish inner diameters.
4.6 from 15,000+ reviews
Free shipping over $50 • Discreet packaging • Ships from Huntington Beach, CA
Off at thirty minutes, or sooner on numbness, pain, coldness or a colour change.

Mammoth Force
HydraForce Lubricant
4 oz water-based lube. Store says glycerin-free and silicone-safe.
4.6 from 15,000+ reviews
Free shipping over $50 • Discreet packaging • Ships from Huntington Beach, CA
