Your search for "SFP-10G-ER" revealed the following:
Juniper QFX-SFP-10GE-ER 10GB BASE-ER 1550nm SMF LR SFP+ Transceiver
SKU: NSB-2989
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Juniper SRX-SFP-10GE-ER 10GB BASE-ER 1550nm SMF SFP+ Transceiver
SKU: NSH-5031
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper SFPP-10GE-ER 10GB BASE-ER LC 1550nm SMF LC SFP+ Transceiver
SKU: NSN-3147
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Juniper SFPP-10GE-ER 10GB BASE-ER LC 1550nm SMF LC SFP+ Transceiver
SKU: NSH-5002
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper EX-SFP-10GE-ER 10GB BASE-ER 1550nm SMF SFP+ Transceiver
SKU: NSN-5117
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Arista SFP-10G-SRL 10GB BASE-SRL 850nm MMF LC SFP+ Transceiver
SKU: NSN-0690
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW HPE J9153A 10GB BASE-ER LC Optical SFP+ Transceiver
SKU: NSN-5060
Condition: New
Shipping: Overnight Options
Warranty: 365 days
HPE J9153A 10GB BASE-ER LC Extended Reach SMF LC SFP+ Transceiver
SKU: NSH-4874
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days