Impact MEI-1LM, Open Ear Insert, Left Ear Medium Quantity in Basket: None Code: MEI1LM Price: $10.00 Shipping Weight: 1.00 pounds Quantity: Impact MEI-1LM, Molded Gel Open Ear Insert, Left Ear, Medium. For use on all Acoustic Tube Accessories. Available for Left or Right Ear, In Small, Medium & Large Sizes.